• CAS No.：
  875770-34-6
• Synonyms：
  Biotin-PEG3-azide
  
• Purity：
  ≥95%
• MF：
  C₁₈H₃₂N₆O₅S
• MW：
  444.6
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  Applicated in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Biotin-PEG3-N3 is a hydrophilic biotinylation reagent featuring a biotin group linked to an azide via a three-unit PEG spacer, enhancing its solubility in aqueous environments. This reagent is ideal for labeling terminal alkynes through copper-catalyzed or copper-free click reactions with cyclooctynes. Biotin-PEG3-N3 enables non-enzymatic, covalent tagging of proteins, making it suitable for downstream detection in SDS-PAGE and Western blot analyses. Additionally, it is valuable in creating nanostructured biointerfaces for studying ligand-receptor interactions and the spatial arrangement of signaling molecules, supporting advanced research in molecular biology and bioengineering.

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